JPH0579120B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a mechanically powered tanning device for applying tanned hides onto smooth and flat plates during the leather manufacturing stage and prior to the drying step.

[Prior art and its problems]

The technique of tanning leather has existed for a long time. Since ancient times, humans have been processing animal fur into supple clothing suitable for wearing. This process includes not only mechanical and scientific procedures to remove blood, lymph, adhering pieces of flesh and body hair from the rawhide, but also oxygen and sterilization to make the rawhide soft and supple. These are processed while still wet. Generally, the skin is dyed and treated with oil and fat to make it smooth, soft, strong, and water resistant. Dyed and fat-soaked hides contain 45-60% water and are usually dried to a moisture content of 14%. During this drying process, the skin undergoes chemical and physical reactions. That is, loose tannins, dyes, and oils are spread evenly, penetrate deeply, and become firmly fixed. On the other hand, if drying is uneven, tannins, dyes, and oils will float on the skin surface without being fixed.
This can cause ugly dark stains and uneven appearance.

A common industrial technique for drying wet rawhide is usually referred to as ``sizing drying''. As the name suggests, the hair-free, bumpy side of the rawhide is glued to a large, flat plate made of glass, ceramic, or metal coated with adhesive, which then passes through a dryer tunnel. Once dried to a predetermined moisture content, the rawhide is peeled off, leaving most of it with a flat, smooth surface that can be immediately finished and processed into a variety of leather products. Alternatively, the wet rawhide may be similarly spread on a flat, smooth polished plate and then vacuum dried. Although this vacuum drying takes less time than drying with glue, it requires expensive equipment.

Whether drying with glue or vacuum drying, it is essential that the wet rawhide adheres tightly to a smooth surface without creating a single bubble. The wet rawhide is applied to the plate surface and smoothed manually with a rubber roller type slicker. A blade with a flat edge is most commonly used here to gently process the wet rawhide surface from center to edge without creating air bubbles or blisters between the rawhide and the plate surface. . At the same time, the rawhide is stretched to expand its area. This is bone-breaking work that requires great strength and sustained force. It's no wonder that towards the end of the day's work, fatigue increases and productivity decreases.

[Purpose of the invention]

The primary object of the present invention is to provide a mechanically powered tanning device that performs the arduous task of stretching this rawhide, thereby reducing fatigue and increasing productivity, resulting in more uniform leather products. .

[Summary of the invention]

Broadly speaking, the present invention relates to a leather tanning apparatus for flattening and stretching wet rawhide on a smooth surface for drying. The device is placed in close proximity to a smooth, flat plate to which the rawhide is applied for drying in accordance with conventional tanning processes. The device consists of a support device for supporting a slicker member placed in close proximity to the rawhide transport plate. The slicker member has a smooth, flat edge that is rotatable in a plane parallel to the surface of the plate.
The slicker member support device is configured to extend the support device in a plane parallel to and remote from the surface of the rawhide transport plate over an area substantially coextensive with the area of the rawhide supported on said plate. Partner with transport equipment to move. The pressing device moves the slicker member into and out of contact with the moist rawhide being conveyed onto the rawhide conveying plate on a path perpendicular to the same plate, and cooperates with the slicker member to exert a force on the slicker member. work A spaced manual control is provided for actuating a drive which causes the slicker member to be manipulated over the surface of the rawhide as if manually handling the rawhide.

[Example of the present invention]

The invention is described for use in conjunction with vertical rawhide transport plates commonly used in tanneries for sizing drying in tunnel dryers. However, it goes without saying that the ideas of the invention apply equally to operating with horizontal plates for smoothing and stretching rawhide on horizontal surfaces, as they are commonly used in vacuum drying.

According to the accompanying drawings, in particular FIGS. 1 and 2, the device structure according to the invention is shown in vertical construction. The device includes a frame, and the frame includes left and right columns 1 erected in parallel and widely spaced apart.
0, 11, and these columns 10, 11 are supported on the floor 12 by legs 13, 14, respectively. The upper horizontal guide rail 15 is in the form of an elongated cylindrical tube or shaft, and its opposite ends are supported by brackets 16 and 17, which in turn are supported by struts 10 and 11, respectively. .

A lower guide rail 18 corresponding to the upper guide rail 15 is supported by brackets 19 and 20. These pillars 10 and 11 and rail 1
5 and 18 are both fixed smooth-surfaced rawhide transport plates 2 on which the wet rawhide 22 is spread.
A rectangular frame having a size between 4 inches by 10 inches and 6 inches by 12 inches is formed, approximately matching the dimensions of 1. As best illustrated in FIG. 2, the frame of the device is mounted adjacent and parallel to the plate 21. In practice, the rawhide is glued to the plate or otherwise adhered in some other way. Usually this is done in the last workshop of the tannery, and the plates are moved into position on a moving conveyor.

The upper X-direction moving carriage, shown as 23 in the figure, is supported on guide rails 15 for horizontal movement therealong. As clearly shown in FIGS. 3 and 4, the pedestal 23 is supported on the guide rail 15 by a cylindrical bush 24. A sprocket chain 25 or similar linear drive device for moving the device is fixed to a bracket 26 forming part of the X-movement frame. The drive chain 25 includes the pillar 11
An idler sprocket 27 supported by a plate 28 at the top (FIG. 1) and a drive sprocket 29 supported by a plate 30 at the top of the column 10.
It is spanned horizontally. This drive chain extends to the X-direction moving frame, and its end is fixed to a bracket 31 supported by the bush. Drive sprocket 29 is moved by a hydraulic or electric motor 32 which is also supported by plate 30.

The vertical plate 33 is supported by the brackets 26 and 31 of the X-direction carriage. Plate 33 supports a bracket 34 which rigidly supports the upper end of each of a pair of parallel spaced vertical Y-movement guide rails 35,36. These guide rails 35 and 36 are similar to the horizontal guide rails 15 and 1.
It has a similar structure to 8. The lower ends of the guide rails 35 and 36 are fixed to a bracket 37 which forms part of a lower X-direction moving frame, indicated by the reference numeral 38 in FIGS. 3, 4 and 6. A bracket 37 is fixed to the back side of a vertical plate 39. The lower pedestal 38 is a plate 39
It is supported on the lower guide rail 18 by a pair of bushes 40, 41 fixed to the front surface of the holder. It can be seen that the upper pedestal 23 and the lower pedestal 28 are tightly assembled along guide rails 35 and 36. In this way, when the upper pedestal is moved horizontally along the upper guide rail 15, the lower pedestal is moved horizontally along the guide rail 18.

A Y-direction moving frame shown at 42 is installed for vertical movement along guide rails 35 and 36. The Y-direction moving frame 42 includes a cylindrical bush 43 that engages with a guide rail 36 for vertical movement. A pair of vertically spaced brackets 44, 45 are
It is fixed to the bush 43 so as to move with it. The left ends of the brackets 44 and 45 each have a pair of parallel spaced finger-like members 46 and 47 (FIG. 5), each of which has a bushing plate 48 and a bushing plate 48 on its interior surface. 49
Each of these plates 48, 49 engages with a guide rail 35 to maintain stable vertical movement of the Y frame 42.

One end of the drive chain 50 has a reference numeral 51.
It is connected to the Y stand 42 at. The drive chain 50 extends downward and is spanned over an idler sprocket 52 between the plate 39 and the bracket 37 of the lower X-direction moving platform 38.
Furthermore, the drive chain extends upward,
It is mounted on a drive sprocket 53 driven by a motor 54 supported on the vertical plate 33 of the upper X-direction moving frame 23. in this way,
Activation of motor 54 causes vertical movement of the Y-direction carriage along guide rails 35 and 36.
This can occur at the same time that the vertical guide rail and the upper pedestal 23 and lower pedestal 38 are moved horizontally along the guide rails 15 and 18 by the operation of the motor 32, respectively.

The vertical plate 55 is supported by the front ends of the brackets 44 and 45 of the Y-direction moving frame. A cylindrical bearing housing 56 is fixed to a plate 55, which plate has horizontal and vertical longitudinal axes. Hub 57 is rotatably supported within bearing housing 56 by spaced ring bearings 58 and 59. Sprocket 60 is attached to one end of hub 57. Same sprocket 60
is driven by a drive chain 61 which in turn is actuated by a motor 63 also mounted on plate 55 and drives a drive sprocket 62.
driven by. Spherical ball spline 6
5 is mounted within a hub 57 to rotate accordingly. Spline shaft 67 extends through ball spline 65 for rotation therewith and corresponding reciprocation in the Z direction.

One end of the shaft 67 is attached to a hub 68 which is supported by a bearing 69 for rotation relative to the elongated plate 70. Plate 70 is in turn supported by piston rods 71 and 72 of air cylinders 73 and 74, each of which is supported by plate 55. A slicker member having the shape of a blade 75 with a straight edge is attached to a blade holder 76.
and is supported by a hub 68 so as to rotate together with the shaft 67 and hub 57 when the motor 63 is driven. The blade 75 is arranged to apply pressure to the rawhide.
The blade 75 may be operated at right angles or at an angle to the surface of the plate 21 and the rawhide resting on this surface, as if by hand. Blade 75 connects cylinders 73 and 74
An adjustable and controllable pressing force is exerted by a cylinder connected to a pneumatic source to reciprocate between the blade and the rawhide 22 and to support the edge of the blade against the rawhide. The slicker member may be in the form of an elongated roller of small diameter.

Motor 3 that operates X direction movement and Y direction movement
2, 54, motor 63 for rotating the slicker member
and a manually operable control device for supplying air to the cylinders 73, 74 which produce the pressing movement of the slicker members, preferably at a distance from the tannery that allows the operator to observe the operation of the tanner at any time. should be installed. The components of the control device are shown in FIGS. 8, 9 and 10. The T-bar control stick handle 85 is supported by a hub 86 that rotates on a bearing 87 of a rectangular frame member 88. Frame member 88 is pivotally supported within frame 91 at horizontally disposed 89 and 90 for rotation about a horizontal axis. The frame 91 is then pivoted at 92, 93 for rotation about a vertical axis within a fixed rectangular frame 94 which is secured to a support panel 95 and from which a plurality of spacer columns are connected. 96. The switch 97 is shown in FIG.
The system is activated to actuate cylinders 73 and 74 which move slicker member 75 into contact with the rawhide to flatten and stretch the rawhide, as shown schematically in FIG.

11 and 13 illustrate the relationship between the components of the control system illustrated in FIGS. 8-10 and the components of some of the machines that actuate the slicker member 75. FIGS. Therein, in particular, a device is shown for transmitting the motion caused by the actuation of the handle 85 to the responsive mechanical component. In the hydraulic circuit illustrated in FIG. 11, a motor-driven hydraulic pump provides the pressure or flow source for the X, Y and servo valve input ports. When a current flows through a servovalve from the electrical control circuit shown in FIG. It will respond proportionately. As will be described in detail later, the direction is determined by the direction in which the handle 85 moves.

When the valve spool moves, the circuit motor 32,
Hydraulic pressure and flow to the actuator in 54 or 63 occurs. The actuator then moves in proportion to the movement of the spool. That is, the spools are sequentially connected to the corresponding servo valve current coils (103, 103,
104 or 107). When control current flows backwards through the control coil, the valve spool moves in the opposite direction, causing the actuator to move in the opposite direction as well. A cross relief valve 100, shown in FIG. 11A, is included in each actuator circuit. This valve is a variable pressure safety device to control the momentum as needed when the actuator is stopped.

FIG. 12 shows the electrical control circuit. X
and a Y-bridge (voltage dividers 101 and 102 are each installed in a component of the control device) are both systems that control the rate of current. Because the voltage divider wiper is located at the center of its movable range,
The current flows through the associated servo valve current coil (103
or 104). When the wiper is moved from its center point in response to movement of the parallel mounted handle 85, current flows in one direction through the current coil of the solenoid valve depending on the direction of the handle movement. The farther the wiper position is from its center point, the more current will flow. Reversing the movement of the wiper away from the center point on the voltage divider reverses the flow of current through the servovalve's current coil, again causing the wiper to move away from the center point on the voltage divider. The more it moves, the more current flows.

Z direction control is a closed loop servo circuit. The voltage divider 105 on the control handle is the master, and the voltage divider 106 on the Z actuator motor 63 is the slave. When the wiper position of the secondary voltage divider does not match that of the primary voltage divider, the inherent current in current coil 107 moves the servovalve.
This is to move the Z actuator 63 and the wiper of the slave voltage divider to the position of the slave voltage divider in coincidence with the position of the main voltage divider. When the Z actuator is driven, the slicker member 75 will also move accordingly.

FIG. 13 shows the pneumatic circuit that produces the pressing force exerted on the slicker member. When the pressurized air is filtered, the pressure becomes regular and smooth before entering the air solenoid valve.
In normal operation, air is drawn from the solenoid valve to each air cylinder 73, 74 while keeping the slicker member 75 in its most retracted position.
flows to the rod end. When switch 97 on handle 85 is depressed, current flows through coil 108, actuating the air solenoid valve. This directs air to the end of the piston of each air cylinder to advance the slicker member toward the rawhide 22. The pneumatic regulator is adjusted to apply a desired load to the slicker member against the rawhide. The extent to which the slicker members advance in and out can be adjusted by a variable electrical control.

Rotation of the T-bar handle 85 moves the wiper of the main Z voltage divider 105. A limit stop is provided for the voltage divider 105 range on one side of the central location. The voltage divider, the slave voltage divider 106 and the current coil 1 of the Z servo valve
07 constitutes a Z drive closed servo loop.

Pivot axes 89 and 90 in Y direction movement
As upper frame 88 rotates with respect to frame 91, gear 109 rotates. Gear 109 meshes with a small gear 110 mounted on Y voltage divider shaft 111, moving the voltage divider wiper in proportion to the movement of frame 88. Springs 112 and 113 keep skewed frames 88 and 91 parallel and in a neutral position that places the wiper of voltage divider 102 at its center point.

In the X direction movement, the fixed frame 9
Rotation of frame 88 about pivot axes 92 and 93 with respect to X voltage divider 101 rotates gear 114, which rotates axis 1 of voltage divider 101 while moving the voltage divider wiper in proportion to the movement of frame 88.
It meshes with a small gear 115 installed on 16.
The springs 117 and 118 are attached to the swaying frame 8.
8 and 91 in parallel and in a neutral position with the voltage divider wiper at its center point.

Many modifications and variations of the invention described above may be made without departing from the original spirit and purpose of the invention. The embodiments described herein are given by way of example only.

[Brief explanation of the drawing]

Fig. 1 is an elevational view of an embodiment of the leather tanning device according to the present invention, Fig. 2 is a plan view of the same device, and Fig. 3 is a plan view of the same device.
An enlarged partial front view showing the support frame for the slider member installed for movement in the XY directions, FIG. 4 is a vertical cross-sectional view taken along 4-4,000 in FIG. 3, and FIG. FIG. 6 is a cross-sectional view taken along line 5-5 in FIG. 3 and further enlarged, showing the support frame in more detail; FIG. FIG. 7 is a plan view including a partial cross section showing details of the support device for the slicker member; FIG. 8 is a top view showing details of the lower X-moving frame; FIG. Partial front view of the manual control device for the 9th
The figure is a cross-sectional view taken along line 9-9 in Fig. 8, Fig. 10 is a longitudinal sectional view taken along line 10-10 in Fig. 8, and Fig. 11 shows that the manual control device is connected to the slicker member. FIG. 11A is a circuit diagram of the servo system showing how to move the power unit to operate the system; FIG. 11A is a cross-relief valve detail of the system in FIG. 11; FIG. The figure is a circuit diagram of a pneumatic system showing the flow of pressing force applied to a slicker member. 10, 11... Support, 15, 18... Guide rail, 16, 17, 19, 20... Bracket,
21... Plate, 22... Rawhide, 23... X direction moving frame, 25... Sprocket chain, 2
6, 31, 34... Bracket, 27... Idler sprocket, 28... Plate, 29... Drive sprocket, 30... Plate, 32...
...Motor, 33, 34...Plate, 35, 36
... Y direction movement guide rail, 42 ... Y direction movement frame, 48, 49 ... Plate, 50 ... Drive chain, 52 ... Idler sprocket,
53... Drive, 54... Motor, 54, 55
... Plate, 56 ... Bearing box, 57 ... Hub,
58, 59...Bearing, 60...Sprocket, 6
1... Drive chain, 62... Drive sprocket, 63... Motor, 65... Ball spline, 67... Spline shaft, 68... Hub,
69... Bearing, 70... Plate, 71, 72...
... Piston rod, 73, 74 ... Air cylinder, 75 ... Blade, 76 ... Blade holder, 85 ... Handle, 86 ... Hub, 88 ...
Frame member, 89, 90... Pivot shaft, 91
... Frame, 94 ... Frame, 100 ... Cross relief valve, 101, 102 ... Voltage divider, 10
3,104,107...Current coil, 105,1
06... Voltage divider, 109... Gear, 110... Gear, 112, 113... Spring, 114... Gear,
115...Gear, 117,118...Spring.

Claims (1)

[Scope of Claims] 1. A leather tanning device that flattens and stretches rawhide on a rawhide conveying plate 21 having a flat surface, comprising: a smooth and straight edge that can rotate on a plane parallel to the surface of the rawhide conveying plate 21; and a drive device 63 that cooperates with the slicker member 75 to rotate it.
and a transfer device 23, 38, 42 for moving said support device in a plane away from and parallel to the surface of the rawhide transport plate and over an area substantially coextensive with the area of the rawhide on the plate. and the rawhide conveying plate 21 in cooperation with the slicker member 75.
moving the slicker member on a path perpendicular to the surface of the plate, bringing the slicker member into and out of contact with the wet rawhide supported on the plate, as if manually handling the rawhide; a control device 85 for actuating the pressing devices 73, 74 for exerting a force on the skin and the drive devices 32, 54, 63 for manipulating the slicker member over the surface of the rawhide;
A leather tanning device characterized by comprising: 2. The support device of the slicker member 75 includes a hub 68 supported for rotation about an axis perpendicular to the plane of the rawhide transport plate, and a motor drive device 63 for rotating this hub. A splined shaft 67 is provided and extends through the hub 68 to rotate with the hub and reciprocate relative to the hub, and the slicker member 75 is supported at one end of the shaft 67 and is driven. 2. The leather tanning apparatus according to claim 1, wherein devices 73 and 74 are provided for reciprocating the shaft and the slicker member. 3. The reciprocating pressing devices 73, 74 have at least one
A leather tanning apparatus according to claim 2, characterized in that it comprises two fluid-operated pistons (71, 72). 4. The leather tanning apparatus according to claim 1, wherein the slicker member is a blade 75. 5. The control device includes a handle 85 that is manually operable and rotatably supported in a first frame 88, the first frame 88 being adapted to rotate about a first axis of rotation perpendicular to the axis of rotation of the handle 85. is pivotally supported within a second frame 91, and the second frame 91 is pivotally supported within a stationary frame 94 to rotate about a second axis of rotation perpendicular to the first axis of rotation; 2. The leather tanning apparatus according to claim 1, wherein said switch 97 is provided within said handle. 6. An electrical connection device between the handle 85 and the drive device of the slicker member 75 rotates the slicker member in response to rotation of the handle, and electrical connection between the first frame 88 and the transfer device 42. The connecting device is one that corresponds to the rotation of the frame.
Move the slicker member support device in the direction of the second
An electrical connection device between the frame 91 and the transfer device moves the slicker member support device in the other direction corresponding to the rotation of the second frame, ie in a direction perpendicular to the first frame, and connects the handle switch 97 and the pushing device. 6. The leather tanning apparatus according to claim 5, wherein an electrical connection device between said switches 73 and 74 causes the slicker member 75 to reciprocate in response to the operation of said switch. 7. The transfer device simultaneously or independently moves the devices 23, 38 for moving the support devices 68, 76 in a first direction corresponding to the rawhide transport plate 21 and the device for moving the support devices 68, 76 in a first direction substantially perpendicular to the first direction. 2. Leather tanning apparatus according to claim 1, characterized in that it includes a bidirectional movement device (42). 8. The transfer device includes a pair of elongated, vertically spaced parallel and horizontal guide rails 15, 18, and the X-direction moving frames 23, 38 are mounted for horizontal movement along each of the guide rails. A pair of elongated, horizontally spaced parallel and vertical guide rails 35, 36 are supported on the pedestal at opposite ends thereof, and a Y-direction moving pedestal 42 is mounted on the vertical guide rails. The leather tanning apparatus according to claim 7, wherein the support devices 68 and 76 of the slicker member are attached to the Y-direction moving frame. . 9 The support device for the slicker member includes a hub 68 supported for rotation about an axis perpendicular to the plane of the rawhide conveying plate 21, a motor drive device is provided for rotating the hub, and a splined shaft 67 extend through the hub for rotation with the hub and to permit reciprocal movement thereto, a slicker member is supported on one end of the shaft 67, and pressing devices 73, 74 are connected to the shaft. 9. The leather tanning apparatus according to claim 8, further comprising a slicker member for reciprocating motion. 10. Leather tanning device according to claim 9, characterized in that the reciprocating pressing devices 73, 74 are provided with at least one fluid-operated piston. 11 The control device includes a handle 85 which is manually operable and rotatably supported within the first frame 88.
, the first frame 88 is pivotally supported within a second frame 91 for rotation about a first axis, and the second frame rotates about a second axis perpendicular to the first axis. 8. A tanning apparatus as claimed in claim 7, characterized in that it is pivotally supported in a stationary frame (94) for this purpose, and in which a switch (97) is provided on said handle. 12 an electrical connection between the handle 85 and the drive of the slicker member 75 rotates the slicker member in response to rotation of the handle;
An electrical connection between the first frame 88 and the transfer device 42 moves the slicker member support device in one direction corresponding to rotation of the frame, and an electrical connection between the second frame 91 and the transfer device The device moves the slicker member support device in the other direction corresponding to the rotation of the second frame, ie in the direction perpendicular to the first frame, and the electrical connection device between the handle switch 97 and the pressing devices 73, 74 Slipper member 75 corresponding to switch operation
12. The leather tanning apparatus according to claim 11, wherein the leather tanning apparatus is characterized in that the leather tanning apparatus makes a reciprocating motion. 13. Claim 1, wherein the first axis is horizontal and the second axis is vertical.
The leather tanning device according to item 2. 14. The device comprises a fixed frame including a pair of elongated, vertically spaced, parallel and horizontal guide rails 15, 18, said transfer device being mounted for horizontal movement along each of said guide rails in the X direction. a pair of elongated, horizontally spaced parallel and vertical guide rails; 35 and 36 are supported by the X-direction movable frames 23 and 38 at their opposite ends, and the Y-direction movable frame 42 is attached to the vertical guide rail so as to move vertically. 2. The leather tanning apparatus according to claim 1, wherein the support devices 68, 76 are attached to the Y-direction movable frame. 15 The support device for the slicker member includes a hub 68 supported for rotation about an axis perpendicular to the plane of the rawhide conveying plate 21, a motor drive device is provided for rotating the hub, and a splined shaft 67 extend through the hub for rotation with the hub and to permit reciprocal movement thereto, a slicker member is supported on one end of the shaft 67, and pressing devices 73, 74 are connected to the shaft. 15. The leather tanning apparatus according to claim 14, further comprising a slicker member for reciprocating the slicker member. 16. Leather tanning device according to claim 15, characterized in that the reciprocating pressing devices 73, 74 are provided with at least one fluid-operated piston. 17. The leather tanning apparatus according to claim 16, wherein the slicker member is a blade. 18 The control device includes a handle 85 which is manually operable and rotatably supported within the first frame 88.
, the first frame 88 is pivotally supported within a second frame 91 for rotation about a first axis, and the second frame rotates about a second axis perpendicular to the first axis. 15. Apparatus according to claim 14, characterized in that it is pivotally supported in a stationary frame (94) for the purpose of controlling the tanning of leather, and a switch (97) is provided on said handle. 19 an electrical connection between the handle 85 and the drive of the slicker member 75 rotates the slicker member in response to rotation of the handle;
An electrical connection between the first frame 88 and the transfer device 42 moves the slicker member support device in one direction corresponding to rotation of the frame, and an electrical connection between the second frame 91 and the transfer device The device moves the slicker member support device in the other direction corresponding to the rotation of the second frame, ie in the direction perpendicular to the first frame, and the electrical connection device between the handle switch 97 and the pressing devices 73, 74 Slipper member 75 corresponding to switch operation
19. The leather tanning apparatus according to claim 18, wherein the leather tanning apparatus is characterized in that the leather tanning apparatus makes a reciprocating motion. 20 The transfer device comprises a fixed frame consisting of a pair of parallel spaced vertical columns 10, 11 and a pair of vertically spaced parallel horizontal guide rails 15, 18; ,18
X-direction movable frames 23 and 38 are attached to move horizontally along the X-direction; a pair of spaced apart parallel and perpendicular guide rails 35 fixed at opposite ends thereof within the mobile frame;
36, a Y-direction movable frame 42 mounted on the vertical guide rails 35, 36 so as to move vertically, and a Y-direction movable frame 42 mounted on the one X-direction movable frame 23 to move the Y-direction movable frame. a motor drive device 54 installed at a hub 68 rotatably supported about an axis perpendicular to said hub 68; a motor drive 63 for rotating said hub 68; a splined shaft 67 for rotation in a plane parallel to the surface of the plate; and the slicker member 75 having a smooth, straight edge supported on one end of the splined shaft 67 for rotation in a plane parallel to the surface of the plate.
and at least one fluid actuated piston 71, 72.
and a pressing device 73, 74 for actuating the fluid-operated pistons 71, 72, and a control device 85 for actuating the drive device 32, 54, 63, which is installed at a distance from the main body of the leather tanning device and is operated manually. A leather tanning apparatus according to claim 1, characterized in that it is configured to be operated at. 21 The control device is manually operable and the first
a handle 85 rotatably supported within a frame 88; the first frame 88 is pivotally supported within a second frame 91 for rotation about a first axis of rotation perpendicular to the axis of rotation of the handle 85;
The second frame 91 is pivotally supported within a stationary frame 94 for rotation about a second axis of rotation perpendicular to the first axis of rotation, and the switch 97 is disposed within the handle. 21. A leather tanning device according to claim 20, characterized in that: 22 An electrical connection device between the handle 85 and the drive device of the hub 68 of the slicker member 75 rotates the slicker member in response to rotation of the handle, and connects the first frame 88 and the Y-direction movement drive device. An electrical connection device between the second frame 9 and the second frame 9 vertically moves the Y-movement frame corresponding to the rotation of the frame about its horizontal axis.
1 and the X-direction driving device is an
2 is moved vertically, and the electrical connection device between the handle switch 97 and the reciprocating pressing devices 73, 74 causes the slicker member 75 to reciprocate in response to the operation of the switch. A leather tanning device according to scope 21. 23. The leather tanning apparatus according to claim 20, wherein the tanning member is a blade.